diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/RenderSVGViewportContainer.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderSVGViewportContainer.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,88 @@
+/*
+    Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
+                  2004, 2005, 2007 Rob Buis <buis@kde.org>
+                  2007 Eric Seidel <eric@webkit.org>
+                  2009 Google, Inc.
+    Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    aint with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#include "config.h"
+
+#if ENABLE(SVG)
+#include "RenderSVGViewportContainer.h"
+
+#include "GraphicsContext.h"
+#include "RenderView.h"
+#include "SVGSVGElement.h"
+
+namespace WebCore {
+
+RenderSVGViewportContainer::RenderSVGViewportContainer(SVGStyledElement* node)
+    : RenderSVGContainer(node)
+{
+}
+
+void RenderSVGViewportContainer::applyViewportClip(PaintInfo& paintInfo)
+{
+    if (SVGRenderSupport::isOverflowHidden(this))
+        paintInfo.context->clip(m_viewport);
+}
+
+void RenderSVGViewportContainer::calcViewport()
+{
+     SVGElement* element = static_cast<SVGElement*>(node());
+     if (element->hasTagName(SVGNames::svgTag)) {
+         SVGSVGElement* svg = static_cast<SVGSVGElement*>(element);
+         m_viewport = FloatRect(svg->x().value(svg)
+                                , svg->y().value(svg)
+                                , svg->width().value(svg)
+                                , svg->height().value(svg));
+    }
+}
+
+AffineTransform RenderSVGViewportContainer::viewportTransform() const
+{
+    if (node()->hasTagName(SVGNames::svgTag)) {
+        SVGSVGElement* svg = static_cast<SVGSVGElement*>(node());
+        return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height());
+    }
+
+    return AffineTransform();
+}
+
+const AffineTransform& RenderSVGViewportContainer::localToParentTransform() const
+{
+    AffineTransform viewportTranslation(viewportTransform());
+    m_localToParentTransform = viewportTranslation.translateRight(m_viewport.x(), m_viewport.y());
+    return m_localToParentTransform;
+    // If this class were ever given a localTransform(), then the above would read:
+    // return viewportTransform() * localTransform() * viewportTranslation;
+}
+
+bool RenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent)
+{
+    // Respect the viewport clip (which is in parent coords)
+    if (!SVGRenderSupport::isOverflowHidden(this))
+        return true;
+    
+    return m_viewport.contains(pointInParent);
+}
+
+}
+
+#endif // ENABLE(SVG)